Lamp shade machine



y 3 B. GOLDBERG 1,958,965

LAMP SHADE MACHINE Filed Dec. 8, 1932 4 Sheets-Sheet 1 Inverz Z67 y. 1934- B. GOLDBERG 1,958,965

LAMP SHADE MACHINE Filed Dec. 8, 1932 4 Sheets-Sheet 2 Irwenfor May 15, 1934. GOLDBERG 1,958,965

LAMP SHADE MACHINE Filed Dec. 8, 1932 4 Sheets-Sheet 5 ,54. 2 as 435 0 6'6 4 22 54 16 1 v-- 21 N 43 a 26 43 27 I I .75 443E D H ya .56 24 3L.\

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LAMP SHADE MACHINE Filed Dec. 8, 1952 4 Sheets-Sheet 4 flaw/W (mama,

INVENTOR,

Patented May 15, 1934 v UNITED STATES 1,958,965 LAMP, SHADE MACHINE Benjamin Goldberg, New York, N. Y.

Application December 8,

8 Claims.

The present invention relates to a machine for forming lamp shades for use in connection, preferably with electric lights or bulbs; with oil lamps, and in connection with other sources of light for '5 fanciful illumination or for reflecting colored light rays, and by diffusion or by reflection either I for reading purposes or for'decorative effects.

An object of the invention is to provide a machine for forming lamp shades of the types above 10 set forth, by semi-automatically assembling preformed stock elements of appropriate character for collectively producing complete lamp shades economically, at a comparatively high productive rate and in two major operations.

Another object of the invention resides in providing adjustable means for accommodating lampshades of various sizes or dimensions and means adjustably mounted for folding an adhesive binder, or tape and for guiding the same i to operative positionin proper assembly with component parts of a lamp shade for binding said parts into coactive relation.

Another object being to provide means whereby materials of any reasonable. thickness may be "3 worked, with no adjustment of the machine parts. Inventive features of the machine construction, are to be found in co-acting male and female rolling devices having respectivelyfixed and movable mountings and manually operated means for quickly separating the said rolling devices at any time in the operation of said machine, for inserting or withdrawing the stock.

elements. or portionsof a lampshade to beunited by suitable means hereinaftensetforth- A further inventive feature ofthe invention resides-in interchangeable male and female rotary parts'for respectively finishing thetopfandboh tom edges of a lamp shade at high speed. ,1

vIn the-drawings forming part of;this specification: 1

-.Fig-. 1.-is a1 frontelevation of the improved lampshade forming machine, omitting the power.

unit and the tape supply meansyan'd; indicating by dot;.and dash lines, a lampshade in operative position.

- Fig. 2:is a horizontal sectional plan view taken about on the line 2-2 of Fig. 1.

A. Fig. 3 is a longitudinal vertical sectional ,eleva- 7 tion of the machine, takengaboutjon the line 3--3 of Fig. 1.

Fig. 4 is an enlarged detail elevation showing' co-acting rotary devices for assembling thejcomr, plementary parts of a lamp shade, to form the] bottomedge thereof. a

7 i i .produceanicely Fig. 5 is an enlarged detail elevation similar 1932, Serial No. 646,348

to Fig. 4 but showing the means for assembling the complementary parts of the lampshade to form the top or upper 'edge thereof.

Fig. 6 is a fragmentary composite view showing.

an adhesive tape support and wetting means and a device or tube for folding and guiding the wet adhesive tape when drawn to the front of the machine to be applied to the edges of'a lamp shade.

Fig. 7 is a composite perspective pre-formed parts of a lampshade to be assembled by the machine of this invention.

. Fig. 8 is a general side elevation of the completed lamp shade as applied to an electric lamp orbulb.v

Fig. 9 is a fragmentary diagrammatic view showing parts of a lampshade and showing the upper roller die just ,as it drops into contact with the said parts tobegin the binding operation. a Fig. 10 is a detail perspective of the binder tape folding and guiding elements. 7 I

Fig. 11 is a section on the line 11-11 of Fig. '10. Fig. 12 is a detail perspective showing how the wet adhesive side of the binder by a break-fold at thedelivery zone close up to roller dies just priorto the binding operation.

Figs. 13 and 14 are side and front viewsrespectively of a guide'andbreak-folding tube fon rei- .ceiving a; binder tape. 1 Referring now to the drawingsin detail, a support or table 10 isprovided having a desirable under-frame 11, here shown as of angle-iron and comprising leg pieces 12, and horizontal connect;-

ing piecesor rails 13 all rivetedtogether toform a substantial structure. Conveniently located on ,the table 10, and fastened thereto. is a machine head, generally designated atM. This structure preferably. comprises a; pair of, parallel gupij ie'ht,

front and rear plates 14 and 15 respectively.. and

in ,eachis-formed a centrally arranged longituditinal slot 16, extending from about midwayljtheir height, upward and through the upper ends thereof. Slidable in the slots 16,.are bearing blocks 17 inwhicha countershaft 18 rotates. i

Keyed to the shaft 18, between theplates 14. and '15 is: a. gear 19,, and a presserroller 20is keyed tothe forward end of, this shaft. to co act with a shaping roller. 21, on a shaft 2 2 which is, driven through a wormgear 2 3-and worm 24 by a motor 105 .2 controlled by a convenient, switeh. 2'6. a

.eferablyj ,two

ployed to pairs 1 or sets of rolliizofzlimre? finished pro uc showing the 65 tape is reversed 89 'm' Fig. 4. of the drawings, theworking face 3f 1-10 the presser roller is plane' and parallel with the axis of the shaft 18; while the companion or forming roller 21 has a circumferential groove 27 and a back-flange 28. The rollers 20 and 21 are employed to assemble the component parts of the bottom edge of a lamp shade S, by applying an adhesive tape or strap 29, folded longitudinally,

partially around a wire ring frame 30, then press--'v ing thewings of the folded tape into intimate contact with the opposite faces of the bottom,

edge portion of the shade body 31, preferably of heavy decorated or plain paperor other sheet material.

The top edge of-the lampshade S is finished or assembled in much the same manner, as best shown in Fig. 5, the only difference being in the cross-section shape of the pressing and forming faces of the rollers 20a and 21a, in which the roller 20a has a working face 20b converging forwardly, while the companion. or forming roller as Fig. 6) on a suitable bracket 36, ,on which direction rollers 37 and 38 are joumalled and within a water pot-39 is mounted alroller 40, dip- "ping into a body'of water 41, which is-applied to the under or adhesive side of the tape 29 byfrictional contact with roller 40 when said tape .is drawnfrom the supply roll to the front of the machine, through a folding tube 42 by which .said tape is foldedcentrally and longitudinally, after which the tape is drawn through an adjustably supported guide 43 (Figs. 1, 2, 3 and 10to 13) hav- ,ing a tapered end 43a; the guide 43, is secured to a block 43b formedwith a forked portion 43c and a shank 43d, whichis passed through a vertical post 43c and secured in adjusted relation by a set screw 43f. The post 43e, is adjustably fixed ina block 43g by a set screw 43h; the block 439, is adjustablyfixed to a second block 43:, by set screws' 43? through a cross-bar 4310, said blocks having bores 431 through which they may be secured'to the sides of the machine or frame M by suitable screwsor bolts 43m, see Fig.3.

' A preferred construction for supporting and receives folds and guides the binding tape 29 delivered from the'supply roll- 35 is shown more clearly in'Figs. 10-and11 of the drawings. The tube is preferably of U shaped tubular cross section, andissecured to-and supported primarily by an L bracket plate having a longitudinal slot 76; through which a set screw, 77, is passed and through a horizontal bracket plate 78, which in turn is connected by screw and slot connections .79, with aside plate 80 of the machine or,

frame-M. Many of the above described details are purposely omitted in the other figures of the drawings to avoid confusion. The binding tape 29 is folded as at .81 by the folding tube 42, said shape being retainedby themember 43 while it reaches the tapered portion 43a where it is break-folded as at 29a by the-op :erator, thus infolding the outer wet adhesive side 100 to the inner position 101 (see Fig; 12)

subsequentlyto be applied to the opposite sides of the frame-ring 30, and the edge portion of the card-board 310i the lamp shade just prior to the application of rolling pressure by flier-one;-

position for application to the assembled edge parts of the lamp shade, the final result being shownin Figs. 4 and 5 of the drawings. The end of the tape of course will be properly placed between the rollers 2021 and over the wire ring frame .30, before starting an assembling operation.

In other words, the operator, will initially draw the tape 29 through the U shaped tubular guide 42, and then through the similarly shaped second guide 43, break-folding it at the inclined termination 43a thereof, then guiding it in break-folded condition along and in the U shaped trough-like open channel 430 of guide 43, right angularly continuing the same. Thereupon the tape is ap plied toinitial portions of the lamp shade parts, that is to the wire frame and the sheet material blank between the rollers 20 and 21; the rollers are then started and the parts and the tape will tween the rollers until the Joint of theshade is finished. New shade parts are then taken and the tape end, cut on finishing the previous shade,

.applied to them without newpreparation of the tape.

Instead of-using water on the -pre-applied adhesive of the tape 29, a liquid adhesive may be placed in the pct 39, and. applied to a dry, nonadhesive ta if desired.

The powe shaft 22, has fixed thereto, a gear 44 adapted or operative coaction with the gear 19 on thecountershaft 18.

The tops of the frame plates 14 and 15 carry cross-bars. 45, which span the slots 16 and are bolted-in place; these cross-bars tapped centrally to receive adjusting screws 46, carrying swiveled follower blocks 47, resting on compressed springs 48, through which, yielding contact is established between the rollers 20 and 21.

be automatically drawn or threaded through be- Tripping means for separating the rollers 20 21 to respectively withdraw or insert finished or unfinished lamp shades, may comprise a foot treadle 49 having alink connection 50, with a rock-bar 51, fixed to a rock-shaft 52, passing through fixed journal blocks 53. adjustably mounting the folding tube 42, which Fixed on 'the opposite ends of the. rock shaft 52, are rock-arms 54, provided with curved re-. cesses 55, through which the counter shaft 18 passes, so that when it is desired to separate the rollers 20-21 when employed, or the rollers 20a-21a, the treadle is' depressed, thus drawing rock bar -51 downwardly and raising the respectiveupper roller. 7

Adiustably fixed on the table face is a gage frame. 56 to .supp ft the shade having backwardly directed arms or extensions 57, which pass through keepers 58 and are held by set screws 59.

For attaching the lamp shade to an'electric lamp or bulb, one of the ring frames 30, may

have connected therewith a spider if desirable. or a cross frame as at 60, formed with clasping loops nor the like, for engagement with an The rock-bar 51, rock-shaft 52 and rock-arms 4 co lectively, constitute a tripper frame 65 for lifting the upper shaft 18, for separating the ears 19 and 44 and the roller dies 20-21 or the roller dies 20a and 21a when in use.

It is understood that modifications may be made in the parts and combinations of my device, and I hereby reserve my right to any and all such changes and modifications as are within the spirit of the invention and the scope of the appended claims. I

In the operation of my machine, the same is normally at rest and when it is desired to complete a lamp-shade; as described hereinbefore, first pedal 49 is stepped upon soas to separate the rollers in my machine and insert therebetween the tape, the wire ring and the paper blank 31 for the lamp-shade, as best indicated in Fig. 9, whereupon the pedal 49 is released and the said elements of the lamp-shade are caught between the two rollers. Switch 26 in now closed and the machine begins to operate and the lampshade finished as described hereinbefore, whereupon the circuit is broken and the machine will stop, after which the pedal 49 is again stepped upon to separate the operating rollers of my machine, take the finished product from therebetween and put a. new set of three elements of tape, ring and paper blank between them when a new operation may begin.

What I claim as new, is:

1. In a machine of the, class described, a break folding guide, comprising a U shaped tube; means to cause said tape to pass through the opening of said U shaped tube with its adhesive side outwardly and its non-adhesive side riding on the inner wall of said U shaped tube; an inclined termination of said tube; an open U shaped trough-like continuation for said tube to be placed angularly thereto, said trough-like extension being adapted to break-fold said tape at said inclined termination and to cause the same to fold into a U shaped channel formation, its adhesive side being turned inwardly.

2. A machine of the class described, comprising a support; a frame thereon; a power shaft journalled in said frame; a countershaft above said power shaft in parallelism therewith; means to journal said countershaft in said frame in a slidable manner; a gear on each of said shafts; a roller die on each of said shafts; means to yieldingly press said countershaft towards said power shaft and put said gears and roller dies into normally operative contact; a tripper frame rockable in said frame having a portion adapted to rotatably support said countershaft, and means to upwardly move said portion of said tripper frame against said yielding pressure on the countershaft whereby said gears and said roller dies will be disengaged.

3. In-a machine as described in claim 2, apedal on said frame; a link connecting said pedal and said tripper frame whereby a downward pressure on said pedal will rock said tripper frame and cause said support to move upwardly and to disengage said shafts and their associated parts.

4. In a machine as set forth in claim 2, said tripper frame comprising a shaft rockable in said frame; an arm by which the same may be rocked, and two oppositely extending arms carrying said countershaft supporting portions.

5. In a machinerforassembling wire frames and a sheet material body of a lamp shade, or the like, by the use of an adhesive securing tape; two rolling dies; means to cause said dies to tightly engage one another through yielding pressure;

one of said rollers having a groove therein to receive said wire frame and to permit the same to be threaded through between said rollers in said groove; co-operating surfaces on the rollers adjacent to said groove adapted to receive a portion of the sheetbody of the lamp shade and of said tape; means to rotate said rollers in cooperative relation so that the two elements of the lamp shade and said securing tape will continuously pass between them under pressure, said tape encircling said frame and engaging said portion of the sheet body, and means to fold said tape and to place the same between the rollers so as to encircle said frame and engage both sides of said sheet body.

6. In a machine for assembling wire frames and a sheet material body of a lamp shade, or the like, by the use of an adhesive securing tape; two rolling dies; means to cause said dies to tightly engage one another through yielding pressure; one

of said rollers having a groove therein to receive said wire frame and to permit the same to be threaded through between said rollers in said groove; co-operating straight, cylindrical surfaces on the rollers adjacent to said groove adapted to receive a portion of the sheet body of the lamp shade and of said tape; means to rotate said rollers in co-operative relation so that the two elements of the lamp shade and said securing tape will continuously pass between them under pressure, said tape encircling said frame and engaging said portion of the sheet body, said straight, cylindrical portions of the rollers being substantially parallel with the axes of said shafts.

7. In a machine for assembling wire frames and a sheet material body of a lamp shade, or the like, by the use of an adhesive securing tape; two rolling dies; means to cause said dies to tightly engage one another through yielding pressure; one of said rollers having a groove therein to receive said wire frame and to permit the same to be threaded through between said rollers in said groove; co-operating surfaces on the rollers adjacent to said groove adapted to receive a portion of the sheet body, and a folding guide for the tape adapted to fold it into a U shaped channel with its adhesive side inwardly so as to guide the same around said wire frame and the adjacent portion of the sheet body.

8. A machine of the class described, comprising a support; a frame thereon; a power shaft journalled in said frame; a countershaft above said power shaft in parallelism therewith; bear ing means for said countershaft slidable in said frame; a gear on each of said shafts; a roller die on each of said shafts; spring means acting between a part of said frame and said slidable bearings to yieldingly press said countershaft towards said power shaft and put said gears and roller dies into normally operative contact; a tripper frame rockable in said frame having a portion adapted to rotatably support said countershaft, and means to upwardly move said portion of said tripper frame against said yielding pressure on the countershaft whereby said gears and said roller dies will be disengaged.

BENJAMIN GOLDBERG. 

